Draft-gear for cars.



G. T. JOHNSON. DRAFT GEAR FOR CARS. APPLICATION FILED MAR. 10, 1913.

Patented Apr 28, 1914.

WITNESSES A Home in Fig. 2.

.UEHTED STATE% FATE T @FFTQE.

GEORGE '1. JOHNSON, OF COLUMBUS, OHIO, ASSIGNOR TO THE BUCKEYE ST ZELCASTINGS 00., OF COLUMBUS, OHIO.

DRAFT-GEAR FOR CARS.

Specification of Letters Patent.

' Patented Apr. 28, 19M.

Application filed March 10, 1913. Serial No. 753,371.

To all whom it may concern Be t known that I, GEORGE T. JOHNSON,

of Columbus, in the county of: Franklin and in draft gears for cars, theobject being to improve the means for transmitting the buffing andpulling stresses to the draft sills of the car, and it consists in thedetails'of construction and combinations of, parts as will be more fullyexplained and pointed out inv the claims.

In the accompanying drawings, Figure 1 is a view in top plan, partly insection, showing my improvement applied to the center or draft sills ofa car; Fig. 2 is a view in perspective of the rear end of the yoke; Fig.3 is a view similar to Fig. 1 of a modified construction and Fig. l is aview in perspective of the front end of the yoke shown 1. and 2represent the center or draft sills of the car. The shock absorbingmeans may be of any preferred construction either of the friction typeor springs, and they are located between the followers 3 and 4:. Thesefollowers 3 and 4, form end abutments for the shock absorbing means andare limited as to movement in the direction of the draft and buffingstrains by the cheek castings 5 and 5. The cheek castings 5 formabutments for the front follower 3 and transmit the pulling stresses tothe draft sills, while the rear cheek castings 5, form abutment for therear follower 4, and transmit the bufiing stresses to the side sills.The rear castings 5 are preferably connected by an integral member 5located in rear of, but in the horizontal plane of movement of the draftyoke 6. This yoke is formed in a single integral casting composed ofparallel top and bottom members, a rear member having a straight flatfront face and a curved rear face, and a hood 7 at its front end. Thishood is substantially the same shape in cross section as the butt end ofa car coupler 8, to receive the latter, but is of slightly greatersectional area than the butt of the coupler so as to permit of somemovement of the coupler in the yoke. This yoke straddles I bothfollowers 3 and 4 as shown inFig. 1 and the shock absorbing means restswithin the yoke, with its ends bearing against the adjacent faces of thefollowers, and normally holds the latter in contact with theirrespective cheek castings 5 and 5*.

The rear end ofthe draw or coupler bar rests within the hood 7 at thefront end of ,the yoke, and the side members of the hood 7 of the yoke,are provided with longitudinal slots for the passage of the key 9. 'Thebutt or rear end of the draft or coupler bar is loosely mounted in thehood of the yoke, and is provided with a transverse slot for the passageof the key 9, which, as previously explained also passes through theslots in the side members of the hood. The key 9 fits snugly within theslot in the draft or coupler bar, but is of less width than the lengthof the slots in the side wings of the hood, so as to permit the couplerbar to have a longitudinal movement rearwardly within the hood andindependent of the yoke.

The rear follower is in advance of the rear end 10 of the yoke'with itsends hearing against the cheek castings 5% The front follower 3, passesthrough the yoke at the rear of the hood with its ends bearing againstthe cheek castings 5 and in position go be engaged by the rear end ofthe coupler The yoke is provided adjacent its rear end with two pairs ofintegral laterally projecting shoulders 11 which latter overhang thecheek castings 5, and the extreme rear end of the yoke rests butslightly in advance of the member 5 connecting the cheeks 5. i

In the operation of the parts a pull on the draw bar or coupler istransmitted through the key 9 directly to the yoke 6 and from the latterwill be carried forwardly with the yoke, thus compressing the shockabsorbing de-' vices located intermediate the followers. As the frontfollower 3 bears'against the rear of the cheek castings, it is held bythe latter against forward'movement. In buffing the "rear end of thedraw bar 8 coming in contact with the front follower forces the same.rearwardly thus'compressing the shock absorbing nieansagainst the rearfollower which as before explained is held against rearward movement bythe cheek castings to the rearfollower i, which 5. The drew bar has alongitudinal movement within the hooded end of the yoke a distance equalto the difierenoe between the length of the slots in the side Wings ofthe hood of the yoke and the Width of the key 9, so that the butlingstrains are transmitted direct to the springs or other shock absorbingmeans and not normally through the yoke, the latter remeininget rest andprevented from rearward moven'ient byithe en gagement with the shoulders11 thereon with be integral with the top and bottom members 6 and 7 ofthe hood as shown in Figs. 3 and 4:; As shown in Fig. 3, these shoulders11 are located in advance of the cheek castings 5 and positively preventa rearward movement of the yoke under butting stresses.

By locating the shoulders in pairs on the upper and lower members of theyoke, and having these shoulders abut against stops carried by the sidesills, any stresses in Will be borne evenly tributed by the to buliingthat may be ti members of the yoke s i As shown in i igs, 1 so freely inelongated slots draft sills.

Having :tully descri e I claim as new and desire to tem-Patent, is

In 'a draft gear for ears ti" a pair of oppositely dispose a yokecomprising top end rear end and hooded i being; provided adjacent pairsof oppositely disposei pair projecting llatere'tly member of the yo eand the jeoting laterally from the lower J.

' said yoke and all of them adapted to the said abutment-s.

In testimony whereof,

specification in the oresente ing Witnesses,

Witnesses:

VJ. o. BENNETT? R. L. lines Y.

